Busted: Huge Pot Farm in Old Rome Subway

Mussolini probably never saw this one coming. An old metro tunnel in Rome built on the fascist leader's orders during the 1930s was covertly operating as a cannabis farm, reports Reuters. Police, using that most ancient detective device—their noses—caught the scent of marijuana just outside its entrance. The passageway, which measured just over half-a-mile in length, was being used as a mushroom farm (legally growing legal mushrooms, that is), but its final section was home to pot plants and bags full of weed.

It's one of the biggest pot busts in Italy's history, and the 750 pounds police nabbed are worth about $3.7 million. The 57-year-old farm owner has been arrested. (Click to read about another surprising drug haul.)